Water-gage



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W.Y BRITTON. WATER GAGE '(NO Model.)

Pate'nted'Oot. 13, 1 896.

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W. BRITTON.

WATER GAGE. ENO. 569,167.

Patented Oct. 13, 1896.'

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3 Sheets-Sheet 3 (No Model.) W. 'BRITTQN WATER GAGE UNITED STATES PATENT OFFICE. i

\VILLIAM BRITTON, OF BOONE, IOWA, ASSIGNOR OF ONE-HALF TO JAMES HALBERT, OF BOONESBOROUGH, IOW'A.

WATER-GAGE.

SPECIFICATION forming part of Letters Patent No. 569,167, dated October 13, 1896.

Application filed J une 24, 1895.

Serial No. 553,935. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM BRITToN, a citizen of the United States of America, residing at Boone, in the county of Boone and State of Iowa, have invented an Improved Vater-Gage, of which the following is a speciflcation.

My object is to provide a cheap, simple, safe, strong, and durable water-gage for boilers, in which the valves are made steam and water tight without the use of stning-boxes, the passage from the boiler to the valve cleaned upon each movement of the valve and the usual petcock at the bottom of the gage dispensed with, and in which the glass tube may be inserted or removed without detaching the gage from the boiler.

My invention consists in certain details of construction, arrangement, and combination of parts, as hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which-'- Figure 1 is a side elevation of the gage applied to a portion of a boiler. Fig. 2 is a vertical longitudinal section of the same, and Fig. 3 is a transverse section through the line 3 3 of Fig. 2.

Referring to the accompanying drawings, the frame of the upper valve is seen to be composed of the horizontal cylinder A, with its end screw-threaded at A2 to enter a boiler and the vertical cylinder AB fixed at right angles to the first. l

The interior construction of the part A is as follows: First a comparatively large bore is made in its outer end, and this bore is i11- ternally screw-threaded- A smaller bore leads from the end of this bore and forms the valvechamber B. A passage B2 is extended rearwardly from the chamber B to the opposite end of the part A. The shoulder at the intersection of the chamber B and passage B2 is countersunk at B2 to form a seat for the valve.

C indicates a plug having a concentric lscrew-threaded bore and externally screwthreaded to enter the end of the cylinder A. The inner end of the plug is countersunk at C2 to form a valve-seat.

The part A3 is bored upwardly from its lower end, a cap D screwed into itstop and provided with an opening D2, communicating with the chamber B. The glass tube D2 is inserted in the lower end of the part A3 and the stufng-box D3 screwed into position surrounding the tube.

It is obvious that after the device is in position on a boiler a new glass may be substituted for the old one or the glass be removed for cleansing by unscrewing the cap D and raising the tube through the part A3.

F indicates the valve-stem, screw-threaded and admitted into the plug O. Near its inner end is a valve F2, having tapered faces F3 on each side, designed to fit the beveled surfaces B3 and C2. The inner end F4 of said valve-stem is triangular in cross-section and of a size adapted to enter the passage B2 and when the valve is seated at B3 to extend to the rear end of the passage, thus loosening all lodgments in said passage each time the stem F is turned to operate the valve. This part F4 may be flat or any other irregular shape that-when turned will scrape the sides of the passage and permit the iiow of water at all times.

It is obvious that when the valve is seated at B communication with the boiler will be cut off, and when the valve is open, that is, seated at O2, the openin g to the glass tube will be obstructed, and yet the escape of steam or water around the valve-stem will be prevented.

The lower valve is similar to the upper valve, as described, and therefore the same reference-symbols are used to indicate the same parts. In addition, however,.to the features shown and described the lower valve has a bore H leading ontwardly'from the inner end of the plug C a slight distance and an opening H2 extending from the bore H downwardly through the nozzle H2.

Small stuffing-boxes J are shown in Fig. 2, surrounding the valve-stems. These, however, are ordinarily dispensed with.

In practical use, assuming that it is desired to test the water, the lower valve is screwed inwardly a slight distance and the water permitted to flow around the valve from the boiler and also from the tube through the outlet. The upper valve may also be opened and closed, as before described. Should it be desirable to run oif the water in the tube and cut off the connection with the boiler, the

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loWer valve is screwed inwardly until the valve is seated. at B3. At each movement of either valve the passage from the valve to the boiler is thoroughly cleaned out, as set forth. It is obviousthat a perfectly tight joint is formed by the valve when in either an open or closed position, so that steam or Water cannot escape around the valve-stem.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent of the United States therefor, is

A Water-gage for boilers, comprising two valves, each designed to be screwed'into the boiler and each having a central longitudinal opening eommunicatingwith the boiler, also 

